Dispensing-pump.



R. E. BECHTOLD.

DISPENSING PUMP.

. APPLICATION FILED JULY 17,1915.

3 SHEETSSHEET I.

ll lllllmmm mnmnil I VE TOR. WITNESSES: W fl/w 2% I V TONEY.

, Patented'JuneQO, 1916' R. E. BECHTOLD.

DESPENSING PUMP. "APPLICATION mm lULY 11.1915.

Patented June 20, 1916.

3 SHEETS-SHEET 2.

WI'fNESSES A TTORNE YS.

R. E., BECHTOLD."

DISPENSING PUMP.

APPLICATION FILED JULY I7, x915.

3 SHEETS-SHEET 3.

WITNESSES.-

Patented June 20, 1916.

REUBEN E. BECHTOLD, 015 FORT WAYNE, INDIANA. ASSIGNOR TO WAYNE OIL TANK & PUMP COMPANY, A CORPORATION OF INDIANA.

DISPENSINGCPUMP.

Specification of Letters Patent.

*at out ed June 20, 11916.

Application filed July 17, 1915. Serial No. 40,367.

To aZZ whom it may concern:

Be, it known that 1, linemen E. Bnoirrou), a citizen of the United States of America, and resident of Fort W ayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Dispensing-Pumps, of which the following is a specification.

This invention relates to improvements n dispensing pumps, and the object thereof 18 to provide a construction for limiting the action of the pump to various predetermined portions of its normal stroke as the operator may desire so that a corresponding volume of liquid will be discharged by the pump upon operation thereof, and to so construct the device as to render its operation accurate and extremely simple.

The objects of the invention are acconn plished by the construction illustrated in the accompanying drawings in which:

Figure l is a rear elevation of the operating mechanism of a pump with the housing thereof cut away disclosing the contained parts: Fig. 2 is a side elevation showing the exterior of the pump operating mechanism and the push-buttons for controlling the movement thereof; Fig 3 detail view of the controlling mechanism showing the housing for same in section and parts thereof and pump operating mechanism, also in section in several planes so as to conveniently show an assemblage of cooperating parts of the invention; and Fig. is a view of the appliance in a plane at right angles to Fig. 3 and showing the hous ing in section on the line :r-.o of Fig. 3.

Similar characters of reference indicate cod-responding parts throlwhout the several views and referring now to the same: (1) indicates a pump, upon which is mounted a standard (2) having at its upper end a housing (3). A pipe (-1-) connected at its loww end with the pump and having communication therewith extends uynvardly through an extended portion of the housing and is-secured therein by a set screw (5) and affords support for the standard. The upper end of the pipe (4) is closed by a cap (6) to prevent discharge from the pump through the pipe, it being the intention that the pipe shall serve as an expansion chamher for the pump as well a support for the housing The pump has a reciprocating pump-rod is a (7) for actuating, the same, and the pumprod has fixed thereon a rack-bar ('8) which. has a lateral projection (9) near its lower end. A ing (10) in the housing has an adjustable set-screw (11) therein located in the path of the projection (9) on the rackbar so that the projection will come into contact with the lower end of the set-screw and thereby stop the upward movement of the rack-bar and pump-rod connected therewith. An opening (12) in the top of the housing is made to a l'lord accessto the setscrew for adjusting the same, and a cap (13) is removably attached to the top of the housing and partially closes the opening therein so as to prevent unauthorized tampering with the setscrew, A plate (LL) at the top of the rack-har (8) and through which the pump-rod extends is adapted to contact with the top of the housing t the end of the downward stroke of the pump-rod and thus limit the downward movement thereof, there being a nut (15) on the upper end of the pump-rod to secure the plate in proper re lation therewith.

A shaft (it) extends through the housing and has fixed thereon a pinion (17) within the housing, and a crank (18) upon the end of the shaft exterior thereof. An intermediate gear (19) meshes with the pinion (17) ainl'rack-lmr (8) and is mounted upon a shaft (21)) that is supported in the housing. As the crank is turned the pump-rod is actuated through the medium of the pinion, gear and 'ack-bar.

The intermediate gear (19) has a hub ('21) from the periphery of which extends lugs (22) and (23) in each of which is placed a threaded set-screw (2i) and (25) respectively A shaft .(26) extends through the housing and has loosely mounted thereon a series of adjustable stops (27), (2S) and (29) respectively, and connected with each of the stops is a corresponi'ling push-rod .(250) thatextends through the front of the housing and has fixed upon its outer end a button .(31). The several buttons bear distinguishing characters that signify the whole unit'of measurement of the, quantity of liquid discharged by the pump upon one cycle of its movement, or fractional portions thereof. For instance: One button bears the character 1 which may signify that the pump will operate at full stroke and that one gallon of liquid will be discharged when the pump is operated through one cycle;

another -button bearing the character (1}) signifies that when pressed into operating position, the pump will operate at. one-half of its full stroke and discharge one-half of r a gallon of liquid; and the other button bearing the character signifies that when pressed into. operating position the pump will operate at one-fourth of its full stroke and discharge one-fourth of a gallon of liquid.

Each of the hinged stops (27), (28)' and.

:an adjacent portion of the housing so that.

the action of the spring tends to hold the its inoperative position.

stop in outward or inoperative position.

Each stop has also on its upper end a prostop (28) at one-half the stroke of the pump faction of the pump. Should the stop (28) be pressed into operating position, the stop (27 being released as the latch 1s raised,- return to inoperative POSllllOIl, and the setscrew (25) in the lug (23) will engage the 70 and arrest further discharge action thereof.

near its upper end adug (37), the latter being adaptedto bear against a ledge (38) extending horizontally. along the ad acent lnner face of the housing when the stop is in hinged upon a shaft L0) that is mounted in the housing, and integral with the latch is a' thumb-piece (41) that extends through a slot (42) in the housing so'that the latch may be manipulated from the exterior thereof. The latch extends across the tops of the stops and is adapted to drop behind the projections (36) on the corresponding .stops and hold the same in place when pressed lnto operative position, and said latch is adapted to be raised. from engaging relation with the projections on the stops and release the same so that the stops-will thereupon return to normal or inoperative 1 position through the action of their corresponding springs, the latch being raised bymanipulating the thumb-piece (41). The stops and latch are so located, and the pro- .jections on' the stops are so formed that when any one of thestops is pressed into operating position, the projection thereon will bear against the latch and raise it sufficiently'during its passage thereunder to release it from engagement with the projection on any other stop in the series that may have been left in operating position thus releasing such other stops so that'they return automatically to inoperative position.

The lugs (22) and (23) on the hub (21) are arranged in different lateral planes and also in different radii of the hub, so that the set-screws in said lugs will engage diflerent stops and also at corresponding different periods in the cycle of. the hub. Thus, the

Meet-screw (24) in the lug (22) will engage the stop (27),. when'the latter is pressed into operating position at one-fourth the stroke of the pump and arrest further discharge A latch (39) is When the stop (29) is pressed inwardly the other stops'are released as the latch (39) is raised-and returned to inoperative position and the discharge stroke of the pump is limited by the engagement between the setscrew, (11) and the lug (9) on the rack-bar. By turning the set-screws in the lugs as occasion may require the extent of movement 30 of the pump maybe adjustably regulated in each instance. Also byturning the setscrew (11) the stroke of the pump may be adjustably regulated at the end of its upward movement. Thus the pump maybe 7 i made to discharge an accurate unit quantity jectionf(36) and also upon its outward face .Should a fractional portion of the normal quantity of discharge be desired. one or the other of the stops may be pressed into operative position accordingly as to the amountof liquid desired, and thus the other stops are released and returned to inoperative position while the stroke of the pump is limited to a corresponding fractional portion of its normal stroke.

The purpose of the invention is to provide a dispensing pump for liquids capable of discharging selectively various quantities of liquids accordingly as may be predetermined by the operator, and to so construct the apparatus that its operationwill require of the operator only the attention necessitated by the mere pushing of the plainly designated push-button and the rotation of the crank, thus reducing the chance of error upon the part of the operatorv \Vhat I claim is-:

1. In a dispensing pump, a pump properhaving a pump-rod to actuate the same; a rack-bar fixed upon the rod and having at its lower end a lateral projection; a standard in fixed relation with the pump and having a housing through which the pumprod and rack-bar extend; a lug in the housing having a set-screw therein extending in the path of the lug on the rack-bar and adapted to enghge-the sagne; a pinion withbar and having a hub from which a plurality of lugs extend respectively in different radii, each lug havmg a set-screw; a se- .extends through the front of the housing and terminate with a push-button bearing a. designating character; a spring in connection with each stop for holding it in inoperative position; and a latch within the housing adapted to engage and hold any of the stops in operative position when pressed into, such position.

2. in a dispensing pump, a pump proper having a pump-rod to actuate. the same; a rack-liar in connection with the pump-rod; a gear in mesh with the rack-bar and having a huh from which a plurality of lugs extend respectively in different radii, each lug having a set-screw; a series of hinged stops adapted to he moved severally into the path of the set-screw ol the corresponding lug; means tending to hold each of the stops out ol operating position; and a latch adapted to ngage and hold any of the stops in operative' position when pressed into such position. I

in a. dispensing pump, a pump proper having mechanism in connection therewith including a,racl -har to actuate the same; a gearin mesh with the rack-bar having a.

plug with a plurality of lugs-extending therefrom in dill'erent planes and also in diti'er nt radii, each lug having a. set-screw therein: a series ol hinged stops adapted to he moved severall into the paths of the set-screws correspoiidingly; a latch having engaging relation with each of the stops; and operating mechanism to drive the gear.

4. ln a dispensing pump,.a pump proper having mechanism in connection therewith to actuate the same; a gear for actuating said mechanism and having means in connection therewith to he driven thereby, a series of hinged'slops; a latch adapted to engage. any oi said stops and hold same in operative position; and means in connection with the gear l or engaging said stops respectively at dili'erent periods in its cycle.

5. in apparatus of the. class described, a pumping means including a rack-bar; a series of hinged stops adapted to be independently shifted into' operative position; a latch adapted to engage and detain any ol' said stops when shifted into operative position; and a gear mechanism for actuating the pumping means, having means in connection therewith for engaging severally said stops at ditt'erent stages of its cycle.

(3. ln apparatus of the class described, a pumping means including a raclebar; a series of independently operated stops; a latch for engaging and detaining any of said stops when sh fted into operative position;. a gear mechanism for actuating the pumping means; and an engaging means in connection with the gear mechanism adapted to eoi'iperate with the said stops accordingly as said stops are shifted, hnd arrest the movement oi the gear mechanism at diflerent stages of its cycle.

7. In apparatus of the class described, a pumping means; a gear mechanism having relation witlrthe pumping means to actuate the same; a series of independently operated stops, eaclrhaving a spring acting to hold the stop in inoperative position; a latch adapted to engage and detain any of said stops when moved into operative position, said stops being each adapted to raise said latch from engagement with the other stops during its passage to operative position; and engaging mechanism in con nection with the gearmechanism adapted to ei'igage the stops correspomlingly as the latter are shifted to operative position, said engaging means being adapted to engage the several stops at correspondingly diti'erent stages of its cycle.

8. ln apparatus of the class described, a

pumping means; a series of independently operated stops; :1. gear mechanism for actuating the pumping means and having engaging means in connection therewith adapted to contact with said stops at different stages of its cycle. accordingly as said stops are shifted into operative position; and a latch adapted to detain any of said stops when pressed into operative position.

In testimonv' wherein l a Ilia: mv simiaturc 

